Mattress structure



July 23, 1940. J. WOLF 2,208,826

MATTRESS STRUCTURE Filed Dec. 8, 1938 P-em My Y UNITED STATES PATENT OFFICE This invention relates to mattress structures, and an object thereof is 'to provide a mattress with a quilted top and bottom so constituted that the top and bottom quilted units are secured, together with underlying layers of padding. to the adjacent border wires of a complemental spring structure.

Another object of the invention is to afford a method of conveniently and economically securing quilted units in connection with an inner spring structure and the side boxing strip of a mattress.

A further object of the invention is to so form the various units of a mattress structure whereby is eliminated certain parts that ordinarily are requiredto secure other parts of the structure in' place.

Other objects and advantages of the invention will appear in the following description.

An illustrative embodiment of the invention is shown in the accompanying drawing, in which:

Fig. 1 is a fragmentary perspective view of one of the quilted units of a mattress in which the invention is incorporated;'

Fig. 2 is a fragmentary perspective view of a spring unit that forms part of a mattress structure;

Fig. 3 is a fragmentary detail view in crosssection showing the connection between one of the quilted units and the underlying mattress structure; and

Fig. 4 is a fragmentary view showing an end elevation of the mattress structure, a portion thereof being broken away.

The illustrative embodiment 'of the invention consists of a mattress having a spring frame unit of usual form provided with border wires I that surround a group of coiled springs 2. Upon the top and. bottom of the spring frame unit are disposed corresponding layers 3, preferably of sisal, the marginal edges of which initially extend beyond the border wires, and upon the layers of sisal are superimposed corresponding quilted units, each of which is constituted of an under sheet 4, a top sheet 5 and a padding 6 intervening between said sheets.

An especial feature of the invention is the construction of the quilted units that form the top and bottom of the mattress. Preferably, the under and top sheets and the interposed padding are secured together by a course ofstitching I so applied as to afford a fanciful design. The marginal edges 8 of the under sheet 4 extend initially beyond. the marginal edges of the padding 8 and the top sheet 5, and the marginal edges of the sisal layers also extending initially beyond the border wires I of the spring frame unit when in place thereon.

Upon assemblage of the spring frame unit, the layers of sisal and the quilted units in their proper positions, the extending margins 8 of the under sheets of the quilted units, are, together with the corresponding margins of the sisal layers, wrapped around the adjacent border wires I of the spring unit and are secured thereto by means of stitches formed with cord 9 or other fastening means. Thus, the spring frame unit, the sisal layers and the quilted units are at the same time united and held securely together by the stitching afforded by the cord. Also, by covering the border wires I with the extending margins of theunder sheets of the quilted units and the sisal layers there are formed inner rolls that extend entirely around the mattress.

After the assemblage of the spring frame'unit. sisal layers and quilted units has been completed, a side boxing strip II is applied around the assemblage, and -its top and bottom edges are attached to the marginal edges of the cor- 25 responding top sheets 5 of the quilted units, there being preferably applied a binding strip II as in the usual manner'to conceal and strengthen their respective junctures.

-By constructing the mattress as above set forth the under sheets 4 of the quilted units, when attached in place, serve not only to secure the quilted units to the spring unit, but also cover and secure the marginal edges of the sisal around the borderwires, and thus is elim- 5 inated the usual burlap covering sheets that are commonly employed in ordinary mattress structures. By securing the edges of the side boxing to the top sheets of the quilted units, the edges of the padding of the quilted units as well as the 40 inner rolls are completely concealed, and also thequilted units are held connected together by the boxing strip.

Variations from the particular construction above disclosed may readily be made by exercise of engineering skill without departure from the spirit or scope of the invention, and the following claims are intended to be inclusive of such variations.

What I claim is:

1. A mattress constituted of a spring unit provided with top and bottom border wires, a filling layer on the top and bottom of said unit, a quilted unit covering each of said layers, each quilted unit having op and under sheets and a padding therebetween secured together, the marginal edges 0! said layers and the marginal edges of said under sheets extending initially outward beyond the corresponding edges of said padding and being backtumed together around the adjacent border wire and secured in place by stitches that extend through said under sheet and layer and the backturned portions thereof thereby to form a roll around the corresponding border wire and under the outer marginal portion of the adjacent padding and top sheet, and a boxing strip the edges of which are secured to the edges of the top sheets of said quilted units.

2. In mattress construction, a spring unit having top and bottom border wires, a filling layer on the top and bottom of said unit, the marginal edges of which extend initially outward beyond the corresponding wires, a quilted unit covering each of said layers having top and under sheets and a padding therebetween secured together, the marginal edges of said under sheets extending outward beyond the padding and being secured together with the marginal edges 01 said layers around said border wires, thus to form marginal rolls supported by said wires and hold said quilted units in place, and a boxing strip forming the outer wall of said structure secured to the edges of said top sheets.

ERWIN J. WOLF. 

